Pneumatic motors are used only in the mining industry and, despite this relatively narrow area, in their production there is an economically unfavorable multiplicity of models with the same operating parameters, but different sizes of the active part (rotors, pistons). For example, G I. Petrovsky plant (Donetsk SNH) serially produces gear pneumatic motors type BSH2-1-5 and PSH-7A with the same operating characteristics (pressure 3.5 kg/cm^2, power 7 hp, compressed air flow rate 6.,8-7 m3/min), but different sizes of rotors: the first has a rotor width of 150 mm and inter-center distance of 100, 75 mm, the second respectively 120 and 145.3 mm. Darasun plant (Chita SNH) and the Communist Plant (Krivoy Rog) serially produced also identical in operating characteristics (5 kg / cm^2; 10 hp; 10 m3 / min) piston engines DR-10 and MP-5. But the diameter and stroke of pistons in the DR-10 engine is 101X62 mm, and MP-5 POX 80 mm. These are not single examples.
Повышение технико-экономических показателей изготовляемых машин и оборудования можно обеспечить не только за счет создания новых, более экономичных типов машин, но и за счет модернизации существующих конструкций.
Gear motors are one of the types of pneumatic motors, widely used as a drive for harvesters, cutting machines, conveyors, drilling and assembly machines, winches and other mechanisms in mines, hazardous by gas or dust. Mostly common are motors with oblique teeth, which, in contrast to the spur tooth, have a higher smoothness of meshing and less noise during operation, and in contrast to chevron - greater simplicity of design and ease of reversing. Pnevmatika plant, for example, produces motors with helical rotors: PSHB-30 for the drive of the combine KKP-1; PRSH-10 for the drive of the light gathering-drilling machine LBS-2; PRSH-16K to the winches of the combine KKP-1; PRSH-16M for the drive of the drilling-drilling machine SBM-Zu, conveyor SKR-11, winch OPL-700, etc.
